During the summer season, the average number of lightning strikes per week in the Royal Canyon area is 3.6.Assume that all the Poisson conditions are met.Let x represent values for the random variable "number of lightning strikes in a week." What is the standard deviation of x?
A)1.897
B)2.354
C)4.162
D)1.212
E)1.318

Question

Quizplus · Accepted Answer

The standard deviation of a Poisson distribution is the square root of its mean ($\lambda$). Given $\lambda = 3.6$, the standard deviation is $\sqrt{3.6} = 1.897$.

During the Summer Season, the Average Number of Lightning Strikes